The Bride's Hair
Just got done seeing this on Svengoolie. I must have seen this movie about 50 times, but this is the first time I noticed this about the Bride's hair. After she rejects the monster, and Dr. Frankenstein pulls her away, her hair is seriously messed up. Initially her hair looks rather well done (if bizarre), but after that it gets completely frazzled. Funny thing, I think it adds something to her character, because she looks like such a mess.
This is my favorite horror movie of all time, although sometimes I waffle with Lugosi's Dracula. Great stuff. Nothing touches the Universal Monster movies for me.